reactos/lib/smlib/execpgm.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/smlib/execpgm.c
   6  * PURPOSE:         Call SM API SM_API_EXECPGM
   7  */
   8 #include <windows.h>
   9 #define NTOS_MODE_USER
  10 #include <ndk/ntndk.h>
  11
  12 #include <sm/helper.h>
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 /**********************************************************************
  18  * NAME                                                 EXPORTED
  19  *      SmExecuteProgram/2
  20  *
  21  * DESCRIPTION
  22  *      This function is used to make the SM start an environment
  23  *      subsystem server process.
  24  *
  25  * ARGUMENTS
  26  *      hSmApiPort: port handle returned by SmConnectApiPort;
  27  *      Pgm       : name of the subsystem (to be used by the SM to
  28  *                  lookup the image name from the registry).
  29  *                  Valid names are: DEBUG, WINDOWS, POSIX, OS2,
  30  *                  and VMS.
  31  *
  32  * RETURN VALUE
  33  *      Success status as handed by the SM reply; otherwise a failure
  34  *      status code.
  35  */
  36 NTSTATUS STDCALL
  37 SmExecuteProgram (IN HANDLE          hSmApiPort,
  38                   IN PUNICODE_STRING Pgm)
  39 {
  40   NTSTATUS         Status;
  41   SM_PORT_MESSAGE  SmReqMsg;
  42
  43
  44   DPRINT("SMLIB: %s(%08lx,'%S') called\n",
  45         __FUNCTION__, hSmApiPort, Pgm->Buffer);
  46
  47   /* Check Pgm's length */
  48   if (Pgm->Length > (sizeof (Pgm->Buffer[0]) * SM_EXEXPGM_MAX_LENGTH))
  49   {
  50     return STATUS_INVALID_PARAMETER;
  51   }
  52   /* Marshal Pgm in the LPC message */
  53   RtlZeroMemory (& SmReqMsg, sizeof SmReqMsg);
  54   SmReqMsg.Request.ExecPgm.NameLength = Pgm->Length;
  55   RtlCopyMemory (SmReqMsg.Request.ExecPgm.Name,
  56                  Pgm->Buffer,
  57                  Pgm->Length);
  58
  59   /* SM API to invoke */
  60   SmReqMsg.SmHeader.ApiIndex = SM_API_EXECUTE_PROGRAMME;
  61
  62   /* LPC message */
  63   SmReqMsg.Header.u2.s2.Type = LPC_NEW_MESSAGE;
  64   SmReqMsg.Header.u1.s1.DataLength    = SM_PORT_DATA_SIZE(SmReqMsg.Request);
  65   SmReqMsg.Header.u1.s1.TotalLength = SM_PORT_MESSAGE_SIZE;
  66
  67   DPRINT("SMLIB: %s:\n"
  68           "  u2.s2.Type = %d\n"
  69           "  u1.s1.DataLength    = %d\n"
  70           "  u1.s1.TotalLength = %d\n"
  71           "  sizeof(PORT_MESSAGE)==%d\n",
  72           __FUNCTION__,
  73           SmReqMsg.Header.u2.s2.Type,
  74           SmReqMsg.Header.u1.s1.DataLength,
  75           SmReqMsg.Header.u1.s1.TotalLength,
  76           sizeof(PORT_MESSAGE));
  77
  78   /* Call SM and wait for a reply */
  79   Status = NtRequestWaitReplyPort (hSmApiPort, (PPORT_MESSAGE) & SmReqMsg, (PPORT_MESSAGE) & SmReqMsg);
  80   if (NT_SUCCESS(Status))
  81   {
  82     return SmReqMsg.SmHeader.Status;
  83   }
  84   DPRINT("SMLIB: %s failed (Status=0x%08lx)\n", __FUNCTION__, Status);
  85   return Status;
  86 }
  87
  88 /* EOF */